| A | B |
|---|
| humidity | The amount of water vapor in the air |
| relative humidity | A measurement that compares the amount of water vapor in the air with the amount it can hold at a given temperature |
| dew point | The temperature at which a volume of air cannot hold any more water vapor |
| barometer | An instrument that measures air pressure |
| anemometer | An instrument that measures wind speed |
| forecast | A prediction of what the weather will be like in the near future |
| air pressure | The force of air against Earth's surface |
| air mass | A large body of air having similar properties |
| front | The boundary between warm and cold air masses |
| tornado | A violent, funnel-shaped cloud |
| hurricane | A large tropical storm with high winds that forms over oceans |
| meteorologist | A person who studies the weather |
| psychrometer | An instrument used to measure relative humidity |
| Doppler radar | A type of radar that calculates distance and shows direction of movement |
